Cabin Air Filter?
Thread Starter
Drifting
Joined: Mar 2011
Posts: 1,807
Likes: 331
From: Ocala FL
Cabin Air Filter?
OK...I'm scratching my head and just wondering if I missed something... Does the C5 have a cabin air filter? IF not, when the HVAC is not on the recycle cabin air setting and drawing in fresh air from outside...where does it draw the air in from? I'm getting an off odor when the HVAC is drawing in outside air but not when recycling cabin air. Any help would be greatly appreciated. Thanks in advance. 
Thread Starter
Drifting
Joined: Mar 2011
Posts: 1,807
Likes: 331
From: Ocala FL
Tech Contributor
Joined: Jan 2007
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From: Dyer, IN
Thread Starter
Drifting
Joined: Mar 2011
Posts: 1,807
Likes: 331
From: Ocala FL
OK, so if I'm getting engine bay fumes in there it's likely coming from that area. I get some "exhaust fumes" but ONLY when drawing in fresh air from outside. I'll have to inspect the gasket that contacts the hood and also make sure that there isn't any damage to the underside of the cowling. Thanks for the help. 
Tech Contributor
Joined: Jan 2007
Posts: 19,454
Likes: 1,160
From: Dyer, IN
OK, so if I'm getting engine bay fumes in there it's likely coming from that area. I get some "exhaust fumes" but ONLY when drawing in fresh air from outside. I'll have to inspect the gasket that contacts the hood and also make sure that there isn't any damage to the underside of the cowling. Thanks for the help.
Thread Starter
Drifting
Joined: Mar 2011
Posts: 1,807
Likes: 331
From: Ocala FL
I've owned the car for about 2 years. Odor started after I had my long tube headers installed. Only happens when the "fresh air" draw is on the HVAC. Doesn't happen at all with the cabin recycle button pushed at all. I don't think that the oil pressure sensor has ever been changed. Maybe I need to try and remove the cowling and inspect it...if that is possible?
Tech Contributor
Joined: Jan 2007
Posts: 19,454
Likes: 1,160
From: Dyer, IN
I've owned the car for about 2 years. Odor started after I had my long tube headers installed. Only happens when the "fresh air" draw is on the HVAC. Doesn't happen at all with the cabin recycle button pushed at all. I don't think that the oil pressure sensor has ever been changed. Maybe I need to try and remove the cowling and inspect it...if that is possible?
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Thread Starter
Drifting
Joined: Mar 2011
Posts: 1,807
Likes: 331
From: Ocala FL
Thread Starter
Drifting
Joined: Mar 2011
Posts: 1,807
Likes: 331
From: Ocala FL
Will do that as well. Thanks for the suggestions. Maybe a long handled stick lighter and hold it near the headers and see if it gets blown out?
Team Owner
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Thread Starter
Drifting
Joined: Mar 2011
Posts: 1,807
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From: Ocala FL
Nope, I did NOT delete the cats. I had to keep the car "legal" for annual state safety and emissions inspections here in PA. I plan to pull the tray at the bottom of the windshield this weekend and see if there's a hole or crack there that could be the problem.